Fattcy-check loom



E. BURT. FANQY CHECK LOOM.

No. 10,442. Patented Jan. 24, 1854.;

nNooH BU a r, or MANoHEs'rnR, CONNECTICUT,

rANoY-cHEoi: LOOM.

Specification of Let't rs Patent No. 10,442, dated aanuai a4, 1854'.

of" oenneceaa', have iaventaceraini sew;

and useful Improvements in Power-Looms for Weaving Fancy-Check Fabrics; and do hereby declare that the following is full, clear, and exact description thereof, reference being" had" to the accompanying drawing, forming a part of this sp ec'ifica tion.

Figures 1-, 2, and 3 represent detached portions of a loom embracing my improvements, the same letters referring to like parts in each of them. It is deemed unnecessary to represent the other well known parts of the loom, as those acquainted with the art will readily understand constructing and applying my improvements to them without further illustration. I

The nature of my invention consists in the position and arrangement of the levers for operating the jacks, viz., hanging them below the web and at a point parallel with and at about a vertical plane with the fell or cloth making point or arranged in any manner substantially equivalent whereby all the hed'dles are sprung so as to elevate and depress all the threads of the warp at the same angle, producing very smooth and even sheds both at top and bottom in any irregular order desired, the shifting of the jacks are rendered safe and perfect, all jarring or unsteady motion of this part of the machinery and danger of the jacks hanging upon the said levers is effectually prevented. The apparatus employed to efl'ec't this possesses the important practical advantages of being extremely simple and eflicaci'ous in its action.

It consists in the arrangement of the two horizontal levers a, a, the two peculiar snail or irregular cams b, b, (for elevating and depressing the said levers at each beat of the lay) the vertical notched bars or jacks a, and their connections with the figure cylinder, arranged and operating in the manner hereinafter described.

The levers or lifters a, a, are hung from the center of the front girth cl on a shaft parallel with and in avertical plane with the fell so as to oscillate on fixed fulcrums, and they extend back toward the rear end of the loom at right angles to the heddles. This position of them is convenient to the figure cylinder, and it being down in the jacks backwardand forward will not produce a jarring or trembling in their motion;

which would be produced were they placed on the harness frame for the upper part of the frame and operated by other means than the snail cams; Such j arring' or trem n me we l cl ha ..t n y to cause the jacks to hangonthelflfll's and thus make irregularities in the figure of the fabric as well as increase the wear and tear of the parts; These levers are providedwith flanges e, projecting on their insides about a quarter of an inch thick and three quarters wide, which fit notches in the vertical bars or jacks 0. They are caused to recede from each other-or to be elevated and depressed by means of the cams b, b, by being provided with pins projecting from their -outsides whichislide in grooves of the said camsn flower part of the frame givesa good support to them so that the cams in their ac- ,t on upon them and the movement of the which move in said grooves) simultaneously and inia very desirable manner, insuring a perfect connection of the jacks with the levers and obviating the liability of the jacks to hang on the flanges of the levers.

The jacks c, are jointed to the heddle I) levers, it, so as to hang vertically betweenthe levers a at, their lower ends passing through slots in thehorizontal rods 2'. These rods slide through holes in the crossties t, t, and

they are jointed to theshort.rods y', connected with the levers 70, against the end of which the pins on the figure cylinder act. They are provided with spiral prongs s, which acting against the shoulders on the rods 2', and against the side of the tie t cause the rods to recoil, so that by the alter nateaction of the springs and the pins of the cylinder, the jacks are moved forward and backward off and on the flanges of the leversa, a. The cylinder from its regular and positive motion and the'cessation in the motion of the levers a, a, above referred to, will cause the connection and disconnection of the jacks with flanges ofthe levers according-to the pattern indicated by the pins of the cylinder to be inevitable.

The irregular worm m, for moving the figure cylinder is formed on the end of the cam shaft 6', by raising a flange p, which flange has an offset 9, angled or tapered of suflicient length to move the cylinder the required distance. This meshes into the'pinion 0, secured to the shaft of the cylinder, the cogs of which are tapered as represented in the drawing, so that, the offset of the worm by impinging against these tapered cogs will move the cylinder, and the regular part of the Worm by entering the cogs will hold it in position until the offset comes around to act again, and so on at each revolution of the cam shaft. Thus a uniform regular and positive motion and check is given to the cylinder without any possible chance of its moving more at one time than another, which will at all times insure a proper and regular action of the jacks to operate the harness, through the connection above described.

Having thus fully described my invention with those parts of the loom with which they are immediatelyaonnected in such a man with and at or about a vertical plane with the fell or cloth making line, so as to produce an even shed both at top and bottom and render the shifting of the jacks from the said levers sure, avoiding the jar 1 of the machinery and obviating the has bility of the jacks to hang on the flanges of the levers, substantially as set forth.

In testimony whereof I have hereunto signed my namebefore two subscribing witnesses.

ENOCH BURT.

Witnesses: i

CHESTER I. KNOX, MARY H. France. 

